Family name Iyescas (Iyescas 
) , globally, is a rare cognomen. The cognomen Iyescas is habitual in Nicaragua, where it is a very rare surname, Mexico, and the United States, where it is an extremely rare surname. Much less frequently, Iyescas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Iyescas | Nicaragua, Spain, Mexico, United States, Peru |